Xll 



CONTENTS OF THE SECOND VOLUME. 



Cochlea? nerves, 81 



Membranous labyrinth, 81 



Vestibular nerves, 84 



The auditory and accessory nerves, 85 



Function of the external ear, Savart's 



experiments, 88 

 Of the tympanum, 90 

 Of the labyrinth, 96 



CHAPTER XIX. 



INNEEVATION, CONTINUED. 



Of the ENCEPHALIC NERVES EXCLU- 

 SIVELY MOTOR in function, 101 

 Third pair, 101 

 Fourth pair, 103 



Sixth pair, 104 

 Facial nerves, 105 

 Ninth pair, 108 



CHAPTER XX. 



INNERVATION, CONTINUED. 



Of the COMPOUND ENCEPHALIC NERVES, 



111 



Fifth pair, 111 

 Eighth pair, glosso-pharyngeal, 115 



Pneumogastric, 119 

 Branches of the vagus, 120 

 Spinal accessory, 127 



CHAPTER XXI. 



INNERVATION, CONTINUED. 



Of the SYMPATHETIC NERVE, 131 

 Cephalic portion, 133 

 Cervical portion, 135 



Thoracic portion, 137 



Lumbar and sacral portions, 138 



Function of the sympathetic nerve, 141 



CHAPTER XXII. 



DIGESTION. 



Subordinate processes of DIGESTION, 149 

 Modifications in animals, 150 

 Classification of food, 151 

 Diet, 155, 157 



Quantity of food necessary for health, 



156 

 Hunger and thirst, 159 



CHAPTER XXIII. 

 DIGESTION, CONTINUED. 



PREPARATORY PROCESSES, 162 



Prehension, 162 



Mastication, 164 



The tongue, 165 



The teeth, 165 



Internal structure of the teeth, 168 



Development of the teeth, 174 



First and second dentitions, 179 



Of the jaw bones at different ages, J81 



Movements of mastication, 181 



Insalivation, 182 



The saliva, 183 



Deglutition ; the pharynx, 185 



CEsophagus, 188 



